Into the pressure cooker, pour the oil and heat (using brown function with the lid open). Brown the meat on both sides, remove and sauté the onion.
Return the meat, add soup mix and pour over the stock. Close and seal pressure cooker and cook for 25 min (soup menu).
Once cooked, release the pressure, open and add all the remaining ingredients. Seal and cook for a further 15 minutes (using HIGH pressure menu and minutes).
Once cooked, release the pressure and open. Cut the meat off the shinbone and cut into small pieces, before returning it to the soap.
Season to taste and serve.